tert-Butyl 3-(2-Chloroethyl)-1,4-dimethyl-5-iodopyrrole-2-carboxylate

tert-Butyl 3-(2-Chloroethyl)-1,4-dimethylpyrrole-2-carboxylate

Benzyl 5-tert-Butoxycarbonyl-4-(2-chloroethyl)-1,3-dimethylpyrrole-2-carboxylate

5-[5-Carboxy-3-(2-chloro-ethyl)-4-methyl-1H-pyrrol-2-ylmethyl]-3-(2-chloro-ethyl)-1,4-dimethyl-1H-pyrrole-2-carboxylic acid tert-butyl ester

Benzyl 5'-tert-Butoxycarbonyl-3,4'-bis(2-chloroethyl)-1',3',4-trimethyldipyrromethane-5-carboxylate